(12^th CLASS — 12014)
BIOLOGY
GROUP FIRST TIME: 20 MINUTES
NEW COURSE MARKS: 17
OBJECTIVE
NOTE: You have four choices for each objective type question as A , B , C and D The choice which you think is correct , fill that circle in front of that question number. Use marker or pen to fill the circles. Cutting or filling two or more circles will result in zero mark in that question.

Question#1

• Galls are growth on a plant that are induced by
  
  (A) Ticks
  (B) Protozoans
  (C) Parasites
  (D) Fungi
  
  
• Parthenocarpy is the development of fruit without
  
  (A) Pollination
  (B) Germination
  (C) Ferterlization
  (D) Hormones
  
  
• In honey be males are haploid and produce sperm by
  
  (A) Mitosis
  (B) Meiosis
  (C) Apoximis
  (D) Parthenogenesi
  
  
• la the zone of elongation the volume of cells increases up to
  
  (A) 100 times
  (B) 150 times
  (C) 200 times
  (D) 250 times
  
  
• Walther fleming first discovered chromosomes in the dividing cells of
  
  (A) Frog larvae
  (B) Sea-Urchin larvae
  (C) Insect larvae
  (D) Salamander larvae
  
  
• During cell division , the nuclear division is called
  
  (A) Cytokinesis
  (B) Karyokinesis
  (C) Plasmolysis
  (D) Diakinesis
  
  
• The prophase stage in which the chromosomes become visible , shorten and thick
  
  (A) Liptotene
  (B) Zygotene
  (C) Pachytene
  (D) Diplotene
  
  
• Incomplete dominance was discovered by 4.0 Clock plant in 1899 by
  
  (A) Devries
  (B) Jhannsen
  (C) Carl correns
  (D) Tscharmach
  
  
• Recombinant DNA is introduced into the host cell by means of a
  
  (A) Vector
  (B) Phage
  (C) Bacterium
  (D) Fungus
  
  
• Who believed in the theory of special creation?
  
  (A) Lanark
  (B) Darwin
  (C) Carious Linnaeus
  (D) Lyell
  
  
• The stage in which the lichens are just like crumpled leaves attached at one point
  
  (A) Moss stage
  (B) Crustose lichen stage
  (C) Foliage lichen stage
  (D) Shrub stage
  
  
• Perhaps the most fragile of all the biomes , because of its short growing season is
  
  (A) Tundra
  (B) Desert
  (C) Gross land
  (D) Temperate Deciduous Grass land
  
  
• The befouling of the air by any thing that may be harmful to living organisms is
  
  (A) water pollution
  (B) Soil pollution
  (C) Air pollution
  (D) Noise pollution
  
  
• The more concentrated extemal environment is termed as
  
  (A) Hopotonic
  (B) Hypertonic
  (C) Isotonic
  (D) Peritonic
  
  
• Nitrogenous waste is very toxic and dissolves quickly in body fluids is
  
  (A) CO
  (B) Urea
  (C) Ammonia
  (D) Uric acid
  
  
• The membrane that bounds vacuole is called
  
  (A) Protoplast
  (B) Tonoplast
  (C) Ectoplast
  (D) Leucoplast
  
  
• Joints that are held together by short fibers embedded in connective tissue
  
  (A) Fibrous Joints
  (B) Cartiliginous joints
  (C) Synovial joints
  (D) Hinge joints

 BIOLOGY
GROUP FIRST 12th CLASS
TIME : 3.10 HOURS
(NEW COURSE)
SUBJECTIVE
MARKS: 83
SECTION-1

2. Write short answers any Eight (8) questions of the following 16

• What are heterothemis ? Give example
• Give structural formula of area and uric Acid
• Why leaves are said to be excretcphores ?
• Differentiate between plantigrade and unguligrade mammals
• What is Pulvinus
• What is rigor mortis?
• Enlist types of cytoplasm on the base of colours in fertilized egg of an Ascidian
• How cytokinesis differ in plant and animal cells?
• What are symptoms of Tamer's syndrome ?
• Differentiate between malignant and benign tumor?
• Differentiate between homology and analogy
• What are endangered species? Give example

3. Write short answers may Eight (8) questions of the following 16

• What is Epilepsy''
• What are the commercial application of cytokinins ?
• Define Receptors. Give their tym s
• What is Seed Dormancy?
• Define Haploid parthenogenesis
• What is Vernalization ?
• Define Restriction Enzymes
• What is Genetic Engineering?
• Compare Thal with Than
• Define Hydrospheric Ecosystem ?
• What is Eutrophication ?
• Define water Pollution

4. Write short answers a ay Six (6) questions of the following 12

• Differentiate between heterochro natin and euchromatin
• Give structural formulae of adenire and thymine
• What is karyotype ? Give its importance
• Differentiate between genotype and phenotype
• What is MODY ? Write its causes
• What is a universal blood donor
• Give two definitions of Niche
• What are lichens?
• Define Autecology with the help of an example

SECTION-I1

Note: Attempt any Three questions from this section. (8x3=24)
Question#5
(a) Describe Osmoregulation in marine and fresh water animals 4
(b) Explain Green House effect and Acid Rain 4

Question#6
(a) Describe different types of joints 4
(b) Describe comparative embryology and molecular biology as an evidence of evolution 4

Question#7
(a) What are receptors? Classify and explain each class 4
(b) Define the following terms (i) Hab-at (ii) Niche (iii) Food web (iv) Succession 4

Question#8
(a) Discuss human female reproductive system 4
(b) Explain the process of transcription

Question#9
(a) Explain role of Nucleus in development 4
(b) Define and explain test cross 4

SECTION -III
(PRACTICAL)

10. Attempt any three parts from A B ,C , D and E (5x3 =15)
(A) Sketch and Label the Male urinogenital system of Frog
(B) Sketch and Label hind limb of .i.og
(C) Write procedure and observatic ns in the study of Geotropism
(D) How will you investigate the water contents in the soil sample
(E) Define Followings .5
(i) Define mitosis
(ii) What is the composition of soil ?
(iii) What are halophytes ? Giw an example
(iv) Define chemotropism
(v) What is coleoptile ?

BIOLOGY
GROUP SECOND TIME: 20 MINUTES
(NEW COURSE)
MARKS: 17
OBJECTIVE
Note: You have four choices for each objective type question as A , B , C and D . The choice which You think is correct , fill that circle in front of that question number. Use marker or pen to fill the circles. Cutting or filling two or more circles will result in zero mark in that question.

Question#1

• The connective tissue which attaches the bones together is called
  
  (A) Ligament
  (B) Tendon
  (C) Cross bridges
  (D) Z-line
  
  
• The disease which causes immobility and fusion of vertebral joints is called
  
  (A) Disc slip
  (B) Sciatica
  (C) Arthritis
  (D) Spondylosis
  
  
• A nerve is
  
  (A) Collection of neurons
  (B) bundle of axons or dendrites
  (C) Connection of dendrites and axons
  (D) Bundle of axons or dendrites bounded by connective tissue
  
  
• Discharge of egg from ovary is called
  
  (A) Ovulation
  (B) Oogenesis
  (C) Gametogenesis
  (D) Menstrual cycle
  
  
• Germination of some seeds e.g. some lettuce vanities, is promoted by
  
  (A) Green light
  (B) Blue light
  (C) Red light
  (D) Violet light
  
  
• Gray vegetal cytoplasm gives rise to
  
  (A) Gut
  (B) Muscle cells
  (C) larval epidermis
  (D) Notochord
  
  
• The particular array of chromosomes that an individual possess is called its
  
  (A) Genotype
  (B) Phenotype
  (C) Karyotype
  (D) Epistasis
  
  
• The phase of Mitosis which ensures equal distribution of chromatids in daughter cells is
  
  (A) Prophase
  (B) Metaphase
  (C) Anaphase
  (D) Telophase
  
  
• In which stage of Meiosis, the paired chromosomes repel each other and begin to separate
  
  (A) Leptotene
  (B) Zygotene
  (C) Pachytene
  (D) Diplotene
  
  
• The cross which is used to find out the homozygous or heterozygous nature of the genotype is called
  
  (A) Test cross
  (B) Reciprocal cross
  (C) Monohybrid cross
  (D) Dihybrid cross
  
  
• The enzyme which joins the two pieces of DNA, is -
  
  (A) DNA polymerase I
  (B) DNA ligase
  (C) Restriction endonuclease
  (D) DNA polymerase II
  
  
• A group of interbreeding individuals belonging to a particular species and sharing a common geographic area is called
  
  (A) Community
  (B) Population
  (C) Ecosystem
  (D) Biosphere
  
  
• All the food chains and food webi begin with
  
  (A) Primary consumers
  (B) Secondary consumers
  (C) Decomposers
  (D) Producers
  
  
• The zone, rich in life, in a fresh water lake is called
  
  (A) Littoral zone
  (B) Limnetic zone
  (C) Profundal zone
  (D) Desert
  
  
• Which of the following act as environmental buffer
  
  (A) Desert
  (B) Oceans
  (C) Forests
  (D) Lakes
  
  
• The incidence of calcium oxalate type stone is
  
  (A) 10 %
  (B) 15 %
  (C) 25 %
  (D) 70 %
  
  
• Excretory structures present in cockroach are
  
  (A) Contractile vacoule
  (B) Malpighian tubules
  (C) Nephridia
  (D) Flame cells

BIOLOGY
GROUP SECOND 12
CLASS - 2014
TIME . 3.10 HOURS
(NEW COURSE)
SUBJECTIVE MARKS , 83
SECTION-I

2. Write short answer; any Eight (8) questions of the following ,16

• Write four osmoregulatory adz mations in xerophytes
• What are different metabolic wastes in human?
• Define pyrexia and pyrogens
• What is Rickets , give its ems
• Compare epicuticle and proem icle
• What is meant by disc slip
• What are neoblasts
• What are three sets of microtu des which originate from each pair of centriole during mitosis
• Why brothers and sisters are n it identical to each other
• Differentiate between homologous and analogous organs
• Suggest any two plans for the conservation of endangered species
• What is genetic drift

3. Write short answer: any Eight (8) questions of the following 16

• What are Biorythms and diurnal rythns
• Write four important roles of Ethane
• Name hormones secreted by Is ens of langerhans and their role
• What is Luteinizing Hormone ante its role
• Differentiate between Menstru il and Oestrans cycle
• Briefly describe the term Metre pause
• Give difference between Exvivo and Invivo Gene therapy
• What is cell suspension culture
• Give location of Tundra Ecosy tern in Pakistan
• Explain Limnetic zone
• What do you know about Hydrodectri Pawer
• What is solid waste? How energy can be obtained from solid waste

4. Write short answers any Six (6) questions of the following 12

• Given function of RNA polymerase in Transcription
• Define codon and Anti codon
• Differentiate between Transcription and Replication
• What are sex limited traits
• What is MODY?
• What is risk of color blind child in family when father is color blind but mother is normal
• Name the deserts found in Pakistan
• Differentiate between Nitrification and de nitrification
• Define Humus

SECTION-II

Note: Attempt any Three questions from this section
Question#5

(a) Explain briefly "Excretion in Plant.
(b) Write a short note on "modification of Environments"

Question#6
(a) Describe locomotion in air .
(b) Discuss factors affecting gene frequency .

Question#7
(a) What is Reflex Arc. Describe the flow of information through of nerous system.
(b) Explain briefly intersection between biotic and A- biotic components in a ecosystem.

Question#8
(a) Define vernalization . Discussits importance in plants.
(b) What is gentic code.Describe its characteristics .

Question#9
(a) Describe the process of Regeneration in various groups of animals .
(b) Describe the Mendel’s law of Independent Assortment with an example.

SECTION-III
(PRACTICAL)